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WO2019029323A1 - 发送和接收随机接入前导码的方法和装置 - Google Patents

发送和接收随机接入前导码的方法和装置 Download PDF

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Publication number
WO2019029323A1
WO2019029323A1 PCT/CN2018/095741 CN2018095741W WO2019029323A1 WO 2019029323 A1 WO2019029323 A1 WO 2019029323A1 CN 2018095741 W CN2018095741 W CN 2018095741W WO 2019029323 A1 WO2019029323 A1 WO 2019029323A1
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WIPO (PCT)
Prior art keywords
resource
random access
indication information
access preamble
broadcast message
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2018/095741
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English (en)
French (fr)
Inventor
刘哲
唐浩
汪凡
周国华
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to EP18843233.0A priority Critical patent/EP3661310B1/en
Publication of WO2019029323A1 publication Critical patent/WO2019029323A1/zh
Priority to US16/786,512 priority patent/US11330634B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0838—Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]

Definitions

  • the present application relates to the field of wireless communications, and in particular, to a method and apparatus for transmitting and receiving a random access preamble.
  • Random access is a process in which a terminal device establishes a communication link with a network device in a mobile communication system
  • non-contention random access is a random access method when the terminal device is in a connected state, for example, in order to obtain a user's time advance Timing advance (TA) ensures that the uplink channel of the simultaneously transmitted user arrives at the base station at the same time, and the terminal device needs to perform non-contention random access.
  • TA time advance
  • the network device allocates a preamble exclusive to the terminal device to the terminal device, and the terminal device sends the preamble to the network device on a fixed resource, so that the network device receives the preamble according to the network device.
  • the preamble updates the TA of the terminal device or acquires other information of the terminal.
  • the 5th generation mobile communication system defines a long term evolution (long term evolution, LTE) and the new radio (new radio, NR) coexistence scenario, when coexistence in the LTE and NR
  • the NR terminal device may also use an uplink carrier of an LTE frequency division duplexing (FDD) carrier pair.
  • FDD frequency division duplexing
  • the uplink carrier shared by the LTE FDD carrier pair may also be referred to as s a supplementary uplink frequency (SUL) resource of NR.
  • SUL supplementary uplink frequency
  • the present application provides a method and apparatus for transmitting and receiving a random access preamble, which can solve the problem of how a terminal device performs non-contention random access when LTE and NR coexist.
  • a method for receiving a random access preamble includes: sending, by a network device, first information, where the first information is used to indicate a first resource or a second resource, where the first information is further used to indicate a random access preamble, the first resource and the second resource are used to transmit a first random access preamble; and the network device receives the first random access preamble on the resource indicated by the first information.
  • the first resource is, for example, an NR uplink resource
  • the second resource is, for example, a SUL resource
  • any information that can be used to indicate an NR uplink resource or a SUL resource and any information that can be used to indicate the first random access preamble can be referred to as a first resource.
  • the first information may be one information or multiple pieces of information.
  • the network device configures, for the terminal device, a resource for non-contention random access, that is, a random access channel (RACH) of the NR uplink resource and a RACH of the SUL resource, and indicating to the terminal device a non-contention random access resource that can be used, thereby preventing the terminal device from determining which resource to use to send the random connection
  • a resource for non-contention random access that is, a random access channel (RACH) of the NR uplink resource and a RACH of the SUL resource
  • RACH random access channel
  • the non-competitive random access fails, or the resource waste caused by the repeated transmission of the random access preamble on the multiple resources of the terminal device can be avoided, or the terminal device can be prevented from transmitting the random access preamble on any one of the resources.
  • the complexity of the random access preamble detected by the network device caused by the code increases.
  • the foregoing first information includes first indication information and second indication information, where the first indication information is used to indicate an NR uplink resource or a SUL resource, and the second indication information is used to indicate the first random access preamble.
  • the first indication information and the second indication information may be respectively carried in a dedicated field, so that the terminal device can be flexibly instructed to perform non-contention random access.
  • the method further includes: the network device sends the third indication information to the terminal device, where the third indication information is used to indicate the first
  • the indication information is carried in a carrier indicator field (CIF).
  • the first indication information may multiplex an existing field, and further, the content indicated by the third indication information is valid for a long time before being updated by the new indication information, thereby The signaling overhead in the non-contention random access procedure can be reduced.
  • the first information includes the second indication information, where the second indication information is used to indicate the first random access preamble, and the first random access preamble has a corresponding relationship with the NR uplink resource or the SUL resource.
  • only one second indication information is needed to simultaneously indicate the first random access preamble and the resource corresponding to the first random access preamble, thereby reducing signaling overhead.
  • the method further includes: the network device sends the second information to the terminal device, where the second information is used to configure the first random access Correspondence between the preamble and the NR uplink resource or SUL resource.
  • the network device may configure a correspondence between each random access preamble and the NR uplink resource or the SUL resource. For example, the network device may configure the first random access preamble to correspond to the NR uplink resource by using the second information, so that the random access may be flexibly configured. The correspondence between the preamble and the resource.
  • the correspondence between the first random access preamble and the NR uplink resource or the SUL resource is a predefined relationship of the communication protocol.
  • the network device does not need to configure the correspondence through signaling, thereby reducing signaling overhead.
  • the method further includes: the network device sends a broadcast message, where the broadcast message is used to configure the NR uplink resource and the SUL resource.
  • the network device can pre-configure the NR uplink resource and the SUL resource by using a broadcast message, so that only a few bits are needed to indicate the resource used by the terminal device for non-contention random access, and the signaling overhead is reduced.
  • the broadcast message includes first configuration information and second configuration information, where the first configuration information is used to configure the NR uplink resource, and the second configuration information is used to configure the SUL resource.
  • the first configuration information and the second configuration information are carried in the same message, so that signaling overhead can be reduced.
  • the broadcast message includes a first field, where the first field includes at least two indication states, where the at least two indication states are used to indicate the number of configuration information carried by the broadcast message, the configuration information. And configured to configure the NR uplink resource and the SUL resource.
  • the first field includes two indication states, and the indication status is used to indicate that the broadcast message carries one configuration information, where the configuration information is used, for example, to configure the NR uplink resource, and the other indication state is used to indicate the bearer in the broadcast message.
  • the configuration information is used to configure the NR uplink resource and the SUL resource, for example, the network device informs the terminal device of the number of configuration information carried by the terminal device by using at least two indication states of the first field, so that the terminal device can be prevented from decoding.
  • the error causes the preamble to be transmitted on the erroneous non-contention random access resource, which improves the reliability of the non-contention random access.
  • the broadcast message includes a second field, where the second field includes at least two indication states, where the at least two indication states are used to indicate whether the broadcast message is used to configure non-contention random access. All configuration information of the resource, where the non-contention random access resource includes the NR uplink resource and the SUL resource.
  • the second field includes two indication states, and one indication state is used to indicate that all the configuration information is carried in the broadcast message, and the terminal device does not need to listen to other broadcast messages, thereby reducing power consumption of the terminal device;
  • An indication state is used to indicate that part of the configuration information is carried in the broadcast message, and the terminal device can listen to the message carrying the other configuration information on the corresponding transmission resource, thereby reducing the terminal device from detecting the broadcast message carrying the other configuration information.
  • the broadcast message includes the first broadcast message and the second broadcast message
  • the network device sends the broadcast message, where the network device sends the first broadcast message, where the first broadcast message includes the first configuration information and the fourth indication information, where The configuration information is used to configure the NR uplink resource, the fourth indication information is used to indicate the second broadcast message, the network device sends the second broadcast message, the second broadcast message includes the second configuration information, and the second configuration information is used to configure the SUL resource.
  • the first configuration information and the second configuration information respectively correspond to two messages, and the network device can configure the NR uplink resource and the SUL resource more flexibly.
  • the network device sends the first information, where the network device sends a broadcast message that includes a power threshold, where the power threshold is used to indicate a correspondence between the received power of the broadcast message and the NR uplink resource and the SUL resource,
  • the broadcast message is used to configure the NR uplink resource and the SUL resource, where the first information includes the power threshold value and second indication information, where the second indication information is used to indicate the first random access preamble.
  • the terminal device when the received power of the broadcast message is greater than or equal to the power threshold, the terminal device performs non-contention random access through the NR uplink resource; or, when the received power of the broadcast message is less than or equal to the power threshold, the terminal device passes SUL resources are used for non-contention random access.
  • the network device can simultaneously detect the first random access preamble on the NR uplink resource and the SUL resource. According to the method provided by the embodiment, the network device may instruct the terminal device to select a resource more suitable for the current communication environment.
  • the first indication information is carried by downlink control information (DCI), radio resource control (RRC) signaling, or media access control (MAC) control element (control element) , CE).
  • DCI downlink control information
  • RRC radio resource control
  • MAC media access control
  • the first indication information is carried in an uplink component carrier (UL CC) domain.
  • UL CC uplink component carrier
  • a field of size 1 bit (ie, a UL CC field) is set in the DCI, where the field is used to carry the first indication information, and when the first indication information is 1, the terminal device is instructed to send a random on the NR uplink resource.
  • the access preamble when the first indication information is 0, instructs the terminal device to send a random access preamble on the SUL resource, so that the non-contention random access resource can be flexibly indicated.
  • the manner in which the foregoing DCI carries the first indication information is only an example.
  • the UL CC field may further include multiple bits for indicating multiple indication states.
  • a method for receiving a random access preamble includes: receiving, by a terminal device, first information, where the first information is used to indicate a first resource or a second resource, where the first information is further used to indicate a random access preamble, the first resource and the second resource are used to transmit a first random access preamble; the terminal device sends a first random access preamble on the resource indicated by the first information.
  • the first resource is, for example, an NR uplink resource
  • the second resource is, for example, a SUL resource, and any information that can be used to indicate an NR uplink resource or a SUL resource and any information that can be used to indicate the first random access preamble can be the first resource.
  • the information, the first information may be one information, or may be multiple information.
  • the network device configures, for the terminal device, a resource for non-contention random access, that is, NR.
  • the RACH of the uplink resource and the RACH of the SUL resource and indicate to the terminal device, the non-contention random access resource that can be used, so that the terminal device cannot be determined by using the resource to send the random access preamble to cause the non-contention random access failure.
  • the resource waste caused by the terminal device repeatedly transmitting the random access preamble on multiple resources may be avoided, or the network device may detect the random access preamble caused by the terminal device transmitting the random access preamble on any one of the resources. The complexity increases.
  • the foregoing first information includes first indication information and second indication information, where the first indication information is used to indicate an NR uplink resource or a SUL resource, and the second indication information is used to indicate the first random access preamble.
  • the first indication information and the second indication information may be respectively carried in a dedicated field, so that the terminal device can be flexibly instructed to perform non-contention random access.
  • the method further includes: the network device sends the third indication information to the terminal device, where the third indication information is used to indicate the first
  • the indication information is carried in a carrier indicator field (CIF).
  • the manner in which the CIF carries the third indication information is not limited, and the CIF may include multiple bits for indicating multiple indication states.
  • the first indication information may multiplex an existing field, and further, the content indicated by the third indication information is valid for a long time before being updated by the new indication information, thereby The signaling overhead in the non-contention random access procedure can be reduced.
  • the first information includes the second indication information, where the second indication information is used to indicate the first random access preamble, and the first random access preamble has a corresponding relationship with the NR uplink resource or the SUL resource.
  • only one second indication information is needed to simultaneously indicate the first random access preamble and the resource corresponding to the first random access preamble, thereby reducing signaling overhead.
  • the method further includes: the terminal device receives the second information from the network device, where the second information is used to configure the first random access Correspondence between the preamble and the NR uplink resource or SUL resource.
  • the network device may configure a correspondence between each random access preamble and the NR uplink resource or the SUL resource. For example, the network device may configure the first random access preamble to correspond to the NR uplink resource by using the second information, so that the random access may be flexibly configured. The correspondence between the preamble and the resource.
  • the correspondence between the first random access preamble and the NR uplink resource or the SUL resource is a predefined relationship of the communication protocol.
  • the network device does not need to configure the correspondence through signaling, thereby reducing signaling overhead.
  • the method before the sending, by the network device, the first information, the method further includes: receiving, by the terminal device, a broadcast message, where the broadcast message is used to configure the NR uplink resource and the SUL resource.
  • the network device can pre-configure the NR uplink resource and the SUL resource by using a broadcast message, so that only a few bits are needed to indicate the resource used by the terminal device for non-contention random access, and the signaling overhead is reduced.
  • the broadcast message includes first configuration information and second configuration information, where the first configuration information is used to configure the NR uplink resource, and the second configuration information is used to configure the SUL resource.
  • the first configuration information and the second configuration information are carried in the same message, so that signaling overhead can be reduced.
  • the broadcast message includes the first broadcast message and the second broadcast message
  • the terminal device receives the broadcast message, including: the terminal device receives the first broadcast message, where the first broadcast message includes the first configuration information and the fourth indication information, where The configuration information is used to configure the NR uplink resource, the fourth indication information is used to indicate the second broadcast message, the terminal device receives the second broadcast message, the second broadcast message includes the second configuration information, and the second configuration information is used to configure the SUL resource.
  • the first configuration information and the second configuration information respectively correspond to two messages, and the network device can configure the NR uplink resource and the SUL resource more flexibly.
  • the terminal device receives the first information, where the terminal device receives a broadcast message that includes a power threshold, where the power threshold is used to indicate a correspondence between the received power of the broadcast message and the NR uplink resource and the SUL resource,
  • the broadcast message is used to configure the NR uplink resource and the SUL resource, where the first information includes the power threshold value and second indication information, where the second indication information is used to indicate the first random access preamble.
  • the terminal device when the received power of the broadcast message is greater than or equal to the power threshold, the terminal device performs non-contention random access through the NR uplink resource; or, when the received power of the broadcast message is less than or equal to the power threshold, the terminal device passes SUL resources are used for non-contention random access.
  • the network device can simultaneously detect the first random access preamble on the NR uplink resource and the SUL resource. According to the method provided by the embodiment, the terminal device can select a resource more suitable for the current communication environment.
  • the first indication information is carried in the DCI, the RRC signaling, or the MAC CE.
  • the first indication information is carried in the UL CC domain.
  • a field of size 1 bit (ie, a UL CC field) is set in the DCI, where the field is used to carry the first indication information, and when the first indication information is 1, the terminal device is instructed to send a random on the NR uplink resource.
  • the access preamble when the first indication information is 0, instructs the terminal device to send a random access preamble on the SUL resource, so that the non-contention random access resource can be flexibly indicated.
  • the manner in which the foregoing DCI carries the first indication information is only an example.
  • the UL CC field may further include multiple bits for indicating multiple indication states.
  • the third aspect provides an apparatus for receiving a random access preamble, where the apparatus can implement the functions performed by the network device in the method related to the foregoing first aspect, where the function can be implemented by hardware or by hardware.
  • the hardware or software includes one or more corresponding units or modules of the above functions.
  • the apparatus includes a processor and a transceiver configured to support the apparatus to perform the corresponding functions of the methods involved in the first aspect above.
  • the transceiver is used to support communication between the device and other network elements.
  • the apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.
  • a fourth aspect provides an apparatus for transmitting a random access preamble, where the apparatus can implement the functions performed by the terminal device in the method related to the second aspect, and the functions can be implemented by hardware or by hardware.
  • the hardware or software includes one or more corresponding units or modules of the above functions.
  • the apparatus includes a processor and a transceiver configured to support the apparatus to perform the corresponding functions of the methods involved in the first aspect above.
  • the transceiver is used to support communication between the device and other network elements.
  • the apparatus can also include a memory for coupling with the processor that retains the program instructions and data necessary for the apparatus.
  • the present application further provides a network system, where the network system includes the apparatus for receiving a random access preamble according to the third aspect, and the apparatus for transmitting a random access preamble according to the fourth aspect.
  • a computer readable storage medium is stored, the computer program code storing computer program code, when executed by a processing unit or a processor, causing the network device to perform the first aspect method.
  • a seventh aspect a computer readable storage medium storing computer program code, the computer program code being executed by a processing unit or a processor, causing a terminal to perform the method of the second aspect .
  • a communication chip in which instructions are stored which, when run on a network device, cause the communication chip to perform the method of the first aspect described above.
  • a communication chip in which an instruction is stored, which when executed on a terminal device causes the communication chip to perform the method of the second aspect described above.
  • a computer program product comprising: computer program code for causing a network device to execute when the computer program code is run by a communication unit or transceiver of a network device, and a processing unit or processor The method of the above first aspect.
  • a computer program product comprising: computer program code, when the computer program code is run by a communication unit or transceiver of the terminal device, and a processing unit or processor, causing the terminal device.
  • Figure 1 is a communication system to which the present application is applied;
  • FIG. 2 is a schematic flowchart of a method for non-contention random access provided by the present application
  • FIG. 3 is a schematic diagram of a possible network device provided by the present application.
  • FIG. 4 is a schematic diagram of another possible network device provided by the present application.
  • FIG. 5 is a schematic diagram of a possible terminal device provided by the present application.
  • FIG. 6 is a schematic diagram of another possible terminal device provided by the present application.
  • FIG. 1 illustrates a communication system 100 to which the present application is applied.
  • the communication system 100 includes a network device 110 and a terminal device 120.
  • the network device 110 and the terminal device 120 communicate through a wireless network.
  • the wireless communication module of the terminal device 120 can acquire a network device to be sent to the network device through a channel.
  • the information bits of 110 are, for example, information bits generated by a processing module of the terminal device 120, received from other devices, or stored in a storage module of the terminal device 120.
  • a terminal device may be referred to as an access terminal, a user equipment (UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless device.
  • Communication device user agent or user device.
  • the access terminal can be a cellular telephone, a handheld device with wireless communication capabilities, a computing device or other processing device connected to the wireless modem, an in-vehicle device, a wearable device, and a user device in a 5G communication system.
  • the network device may be a base transceiver station (BTS) in a code division multiple access (CDMA) system, or may be a base station in a wideband code division multiple access (WCDMA) system (
  • the node B, NB) may also be an evolved base station (eNB) in a long term evolution (LTE) system, or may be a base station (gNB) in a 5G communication system, and the foregoing base station is only an example.
  • the network device can also be a relay station, an access point, an in-vehicle device, a wearable device, and other types of devices.
  • the communication system to which the present application is applied is merely an example.
  • the communication system to which the present application is applied is not limited thereto.
  • the number of network devices and terminal devices included in the communication system may be other numbers.
  • the SUL resource refers to a transmission resource in which only uplink resources are used for the current communication standard. For example, for one carrier, only uplink frequency domain resources are used for transmission. For example, in a 5G mobile communication system, carrier A is only used for uplink transmission of NR, the carrier is not used for downlink transmission, or the carrier is used for downlink transmission of LTE communication system and is not used for downlink transmission of NR communication system, then the carrier A is a SUL resource.
  • the terminal device needs to perform random access when initially accessing the cell, so as to obtain the unique identifier of the terminal device in the cell, and the random access of the terminal device when initially accessing the cell is also referred to as contention-based random access.
  • the terminal device accesses the cell, in some cases, random access is also required.
  • the terminal device when the terminal device is in an RRC connected state, when the terminal device needs to reply a positive or negative response to the received downlink data, the uplink and downlink communication link is in an unsynchronized state; for example, the terminal device is in an RRC connected state, and the network The device needs to obtain the timing advance of the terminal device.
  • the terminal device needs to establish uplink and downlink synchronization with the new cell.
  • the terminal device needs to perform random access. Different from the random access when the cell is initially accessed, the random access in the above three cases is non-contention random access, that is, the terminal device is based on the network device.
  • the assigned unique random access preamble performs random access and does not use the same random access preamble with other terminal devices.
  • the "random access preamble" is sometimes simply referred to as "preamble”.
  • FIG. 2 is a schematic flowchart of a method for non-contention random access provided by the present application. As shown in Figure 2, the method includes:
  • the network device sends a broadcast message, where the broadcast message is used to configure an NR uplink resource and a SUL resource, where the NR uplink resource and the SUL resource are used to send a random access preamble.
  • the broadcast message includes a time domain parameter, a frequency domain parameter, and a code domain parameter for configuring a physical random access channel (PRACH) of the foregoing two resources
  • the time domain parameter may be a PRACH
  • the frequency domain parameter may be a starting resource block (RB) of the PRACH, and a number of RBs occupied by the PRACH
  • the code domain parameter may be a preamble format.
  • Information sequence length of preamble, subcarrier spacing size, and length of time occupied), orthogonal cover code, and cyclic shift.
  • the broadcast message may be a system information block (SIB) 2 or a remaining minimum system information (RMSI), which is not limited in this application.
  • SIB system information block
  • RMSI remaining minimum system information
  • the network device may configure the NR uplink resource and the SUL resource by using the first broadcast message and the second broadcast message.
  • the first broadcast message includes a parameter of the PRACH of the NR uplink resource
  • the first broadcast message further includes indication information (ie, fourth indication information) for indicating whether there is another radio resource configuration, when the indication information indicates that there are other
  • the second broadcast message is used to configure the parameters of the PRACH of the SUL resource.
  • the first broadcast message is, for example, SIB2 or RMSI
  • the second broadcast message is, for example, SIB3.
  • the terminal device determines, according to the relationship between the reference signal received power (RSRP) of the downlink carrier and the threshold value indicated by the power threshold information. Which resource sends the preamble. If the RSPR of the downlink carrier is greater than or equal to the threshold, the terminal device determines to use the first set of resource parameters, and if the RSPR of the downlink carrier is less than the threshold, the terminal device uses the second set of resource parameters, where the first set of resource parameters And the second set of resource parameters correspond to the NR uplink resource and the SUL resource, and the network device may indicate the configuration order of the two resources in the broadcast message.
  • RSRP reference signal received power
  • the terminal device may determine, according to the first indication information sent by the network device, the resource that sends the preamble, or the terminal device may also be in the NR uplink resource and the SUL.
  • the preamble is sent twice on the resource, and the network device sends the RAR to the terminal device on the NR uplink resource or the SUL resource, so that the network device does not need to send the first indication information to the terminal device, which saves signaling overhead.
  • the broadcast message sent by the network device may include multiple sets of resource configuration parameters, where only one set of resource configuration parameters includes configuration parameters of the downlink carrier, so that the terminal device receives the trigger information through the downlink carrier.
  • the multiple resource configuration parameters may further include an uplink bandwidth parameter and a frequency point parameter, and the uplink bandwidth parameter may be indicated by an enumerated type, and an enumerated value represents a specific bandwidth size, and the uplink frequency parameter may be, for example, used to indicate a frequency.
  • the bit information of the point, the bit code used by the absolute frequency point is related to the definition of the bandwidth and the size of the grid.
  • the broadcast message may further include a subcarrier offset (subcarrier Shift) cell, where the subcarrier offset cell is used to configure an offset mode of the frequency domain resource of the SUL resource, and the offset mode includes the following mode 1, the offset mode. Also included is at least one of Mode 2, Mode 3, and Mode 4, wherein Mode 1 indicates no offset, Mode 2 indicates subcarrier baseband offset 7.5 kHz, and Mode 3 indicates subcarrier RF offset 7.5 kHz, mode 4 denotes a grid offset of 7.5 kHz, and the subcarrier offset cell indicates at least one of the above four modes.
  • a subcarrier offset subcarrier Shift
  • the baseband offset of 7.5 kHz refers to generating a baseband signal based on the offset of 1/2 subcarrier, ie, e j2 ⁇ (k+1/2)t , uplink resource
  • the RF offset 7.5 kHz is multiplied by the carrier frequency and 7.5 kHz when the baseband signal is modulated to the medium RF, ie
  • the grid frequency shift of 7.5 kHz means that the frequency corresponding to the 13000 frequency point is 1920 MHz + 7.5 kHz.
  • the network device sends trigger information to the terminal device, where the trigger information is, for example, DCI or RRC signaling.
  • the network device may trigger the terminal device to initiate random access by using a DCI of a certain format (for example, DCI format 1A).
  • the DCI in this format includes the following information: a preamble used for random access.
  • the preamble indicated by the preamble index is a dedicated preamble allocated by the network device to the terminal device, and the other terminal device does not use the preamble for random access.
  • the resource type used by the sending preamble is used to indicate that the terminal device uses the NR uplink resource or the SUL resource.
  • the network device may indicate, by using the UL CC index, that the terminal device uses the NR resource or the SUL resource.
  • the PRACH Mask Index is used to indicate the RACH resource index allocated to the terminal device for transmitting the dedicated preamble.
  • the PRACH Mask Index is equal to 3 to query the 3rd generation partnership project (3GPP) technical specification.
  • Table 7.3.1 of the technical specification (TS) 36.321 shows that the index of the RACH resource corresponding to the index is 2, that is, the preamble should be sent on the third PRACH in the system frame.
  • the network device may add a field with a size of 1 bit (ie, a UL CC field) in the DCI to carry the first indication information indicating the uplink resource used by the preamble, for example, when the field is “1”
  • a field with a size of 1 bit ie, a UL CC field
  • the terminal device is instructed to use the NR resource to send the preamble, when the field is “0”, the terminal device is instructed to use the SUL resource to send the preamble.
  • the network device may use the CIF field to indicate an uplink resource used by the preamble, for example, the network device may adopt a certain field in RRC signaling or high-layer signaling (ie, The third indication information indicates that the CIF field of the DCI is used to carry the third indication information, indicating the uplink resource used by the preamble.
  • the content indicated by the third indication information is valid for a long time before being updated by the new indication information, so that the signaling overhead in the non-contention random access procedure can be reduced.
  • the manner in which the CIF carries the third indication information is not limited, and the CIF may include multiple bits for indicating multiple indication states.
  • the communication protocol may pre-define a correspondence between the random access preamble and each resource.
  • the non-contention random access preamble on the NR uplink resource may be configured by using a broadcast message, where the number is N and the indexes are respectively 0 to N-1; configure a non-contention random access preamble on the SUL resource, the number of which is M, and the index is N to N+M-1, respectively.
  • the preamble index of the communication protocol pre-defined index is 0 to N-1 corresponding to the NR uplink resource, and the preamble index indexed by N to N+M-1 corresponds to the SUL resource.
  • the terminal device may determine to send the first random access preamble on the NR uplink resource; similarly, if the second indication information If the indicated preamble index is one of N to N+M-1, the terminal device determines to send the first random access preamble on the SUL resource, that is, information for indicating the random access preamble and used for The information indicating the non-contention random access resources is multiplexed with the same field, thereby reducing the signaling overhead in the non-contention random access procedure.
  • the network device displays or implicitly configures 10 non-contention random access preambles for the NR uplink resource, and the network device explicitly or implicitly configures 20 non-contention random access preambles for the SUL resources, and the remaining 30 The preamble No.
  • the 63 is used for contention-based random access; according to the corresponding relationship of the network configuration, for example, the '0' in the 1-bit field in the broadcast information indicates that the non-competitive preamble number of the NR uplink resource is in the front, and the non-competition of the SUL
  • the preamble number is followed by an optional numbering method: the non-contention random access preambles numbered 0 to 9 are indicated as 10 non-contention random access preambles on the corresponding NR uplink resource; the numbers 10 to 29 are non-
  • the contention random access preamble is indicated as 20 non-contention random access preambles on the corresponding SUL resource.
  • the terminal device When the preamble index sent by the network device is 2, the terminal device sends a preamble number 2 to the network device on the NR uplink resource. When the preamble index sent by the network device is 11, the terminal device sends the number on the SUL resource. For the preamble of 11, the network device receives the preamble sent by the terminal device on the corresponding resource.
  • the manner of the specific joint numbering is not limited to the above examples.
  • the network device may indicate a preamble used by the terminal device by using a ra-PreambleIndex field in the RRC signaling, and indicate that the preamble is sent by using a ra-PRACH-MaskIndex field in the RRC signaling.
  • PRACH resources The specific implementation process is similar to the method for sending a preamble by using a DCI to trigger a terminal device. For brevity, details are not described herein.
  • the trigger information may also be a MAC CE.
  • the method 200 also includes:
  • the terminal device initiates random access according to the preamble and the PRACH resource indicated by the trigger information, and sends the preamble to the network device.
  • S204 The network device blindly detects the preamble in the PRACH. If the network device detects the preamble, the network device sends the random access in the physical downlink shared control channel (PDSCH) in the random access response window. Response (RAR).
  • PDSCH physical downlink shared control channel
  • RAR Response
  • the RAR includes: a random access radio network temporary identity (RA-RNTI), an index corresponding to the preamble in S203, and a TA. Other information may also be included in the RAR.
  • RA-RNTI random access radio network temporary identity
  • the network device configures, for the terminal device, resources for non-contention random access in advance, and indicates to the terminal device that the terminal device can be used when non-contention random access is required.
  • the network device can prevent the terminal device from determining which resource to use to send the random access preamble to cause the non-contention random access to fail, or can prevent the network device from detecting the random access preamble on any one of the resources to detect the randomness of the network device.
  • the complexity of accessing the preamble is increased.
  • the terminal device and the network device include corresponding hardware structures and/or software modules for performing the respective functions in order to implement the above functions.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the present application may divide a functional unit into a network device or the like according to the above method example.
  • each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 3 shows a possible structural diagram of the network device involved in the above embodiment.
  • the network device 300 includes a processing unit 302 and a communication unit 303.
  • the processing unit 302 is configured to control the management of the actions of the network device 300.
  • the processing unit 302 is configured to support the network device 300 to perform S201 of FIG. 2 and/or other processes for the techniques described herein.
  • the communication unit 303 is for supporting communication between the network device 300 and other network entities, such as communication with the terminal device.
  • the network device 300 may further include a storage unit 301 for storing program codes and data of the network device 300.
  • the processing unit 302 controls the communication unit 303 to perform the following steps:
  • broadcast message is used to configure an NR uplink resource and a SUL resource, where the NR uplink resource and the SUL resource are used to send a random access preamble;
  • the terminal device Sending the first indication information and the second indication information to the terminal device, where the first indication information is used to indicate the NR uplink resource or the SUL resource, and the second indication information is used to indicate the first random access preamble;
  • the processing unit 302 can be a processor or a controller, such as a central processing unit (CPU), a general purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit. , ASIC), field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 303 can be a transceiver, a transceiver circuit, or the like.
  • the storage unit 301 can be a memory.
  • the network device involved in the present application may be the network device shown in FIG.
  • the network device 400 includes a processor 402, a transceiver 403, and a memory 401.
  • the transceiver 403, the processor 402, and the memory 401 can communicate with each other through an internal connection path to transfer control and/or data signals.
  • the network device 300 and the network device 400 provided by the present application configure resources for non-contention random access for the terminal device in advance, and indicate the resources that can be used to the terminal device when the terminal device needs to perform non-contention random access, thereby It can be avoided that the terminal device cannot determine which resource is used to send the random access preamble, which causes the non-contention random access to fail, or can avoid the waste of resources caused by the terminal device repeatedly transmitting the random access preamble on multiple resources, or can avoid The complexity of detecting the random access preamble by the network device caused by the terminal device transmitting the random access preamble on any one of the resources increases.
  • FIG. 5 shows a possible structural diagram of the terminal device involved in the above embodiment.
  • the terminal device 500 includes a processing unit 502 and a communication unit 503.
  • the processing unit 502 is configured to control and manage the actions of the terminal device 500.
  • the processing unit 502 is configured to support the terminal device 500 to perform S203 of FIG. 2 and/or other processes for the techniques described herein.
  • the communication unit 503 is for supporting communication between the terminal device 500 and other terminal entities, such as communication with network devices.
  • the terminal device 500 may further include a storage unit 501 for storing program codes and data of the terminal device 500.
  • the processing unit 502 controls the communication unit 503 to perform the following steps:
  • a broadcast message where the broadcast message is used to configure an NR uplink resource and a SUL resource, where the NR uplink resource and the SUL resource are used to send a random access preamble;
  • the network device Receiving, by the network device, the first indication information and the second indication information, where the first indication information is used to indicate the NR uplink resource or the SUL resource, and the second indication information is used to indicate the first random access preamble;
  • Processing unit 502 can be a processor or controller, such as a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication unit 503 can be a transceiver, a transceiver circuit, or the like.
  • the storage unit 501 can be a memory.
  • the terminal device involved in the present application may be the terminal device shown in FIG. 6.
  • the terminal device 600 includes a processor 602, a transceiver 603, and a memory 601.
  • the transceiver 603, the processor 602, and the memory 601 can communicate with each other through an internal connection path to transfer control and/or data signals.
  • the terminal device 500 and the terminal device 600 provided by the present application determine resources for non-contention random access according to the broadcast message sent by the network device, and determine available resources according to the first indication information sent by the network device, thereby avoiding the terminal.
  • the device cannot determine which resource is used to send the random access preamble, causing the non-contention random access to fail, or avoiding waste of resources caused by the terminal device repeatedly transmitting the random access preamble on multiple resources, or avoiding the terminal device being
  • the complexity of detecting a random access preamble by the network device caused by the random access preamble transmitted on any one of the resources increases.
  • transceivers may include a transmitter and a receiver.
  • the transceiver may further include an antenna, and the number of antennas may be one or more.
  • the memory can be a separate device or integrated into the processor.
  • the above various devices or parts of the device can be integrated into the chip for implementation, such as integration into a baseband chip.
  • the network device or the terminal device in the device and the method embodiment are completely corresponding, and the corresponding steps are performed by the corresponding module, for example, the sending module method or the step sent by the transmitter performing the method embodiment, and the receiving module or the receiver performing the method embodiment
  • the steps of receiving, except for transmitting and receiving, may be performed by a processing module or processor.
  • a processing module or processor For the function of the specific module, reference may be made to the corresponding method embodiment, which is not described in detail.
  • the size of the sequence number of each process does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the present application.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, removable hard disk, compact disk read only (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the terminal device.
  • the processor and the storage medium can also exist as discrete components in the terminal device and the network device.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in or transmitted by a computer readable storage medium.
  • the computer instructions may be from a website site, computer, server or data center via a wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Another website site, computer, server, or data center for transmission.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD), or a semiconductor medium (eg, a solid state disk (SSD)). Wait.

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Abstract

本申请公开了一种接收和发送随机接入前导码的方法，包括：网络设备发送广播消息，该广播消息用于配置NR上行资源和SUL资源，该NR上行资源和该SUL资源用于发送随机接入前导码；网络设备向终端设备发送第一指示信息和第二指示信息，第一指示信息用于指示NR上行资源或SUL资源，第二指示信息用于指示第一随机接入前导码；网络设备在第一指示信息指示的资源上接收第一随机接入前导码。从而可以避免终端设备无法确定使用哪个资源发送随机接入前导码导致非竞争随机接入失败，或者，可以避免终端设备在任意一个资源上发送随机接入前导码导致的网络设备检测随机接入前导码的复杂度增加。

Description

发送和接收随机接入前导码的方法和装置
本申请要求于2017年08月11日提交中国专利局、申请号为201710686829.5、申请名称为“发送和接收随机接入前导码的方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信领域，尤其涉及一种发送和接收随机接入前导码的方法和装置。
背景技术
随机接入是移动通信系统中终端设备与网络设备建立通信链路的一个过程，非竞争随机接入是终端设备处于连接态时的一种随机接入方法，例如，为了获取用户的时间提前量(timing advance，TA)，保证同时传输的用户的上行信道同时到达基站，终端设备需要进行非竞争随机接入。在非竞争随机接入情况下，网络设备会分配给终端设备一个该终端设备独占的前导码(preamble)，终端设备在固定的资源上向网络设备发送该前导码，以便于网络设备根据接收到的该前导码更新终端设备的TA或者获取终端的其它信息。
为了提高资源利用率，第5代移动通信系统(the 5 th generation，5G)定义了长期演进(long term evolution，LTE)与新无线(new radio，NR)共存的场景，在LTE与NR共存时，NR终端设备除了可以使用NR资源外，还可以使用LTE频分复用(frequency division duplexing，FDD)载波对的上行载波，对于NR来说，LTE FDD载波对中共享的上行载波也可称为NR的一个增补上行(supplementary uplink frequency，SUL)资源，在LTE与NR共存的场景下，NR终端设备如何在NR上行资源或者NR增补上行资源上进行非竞争随机接入是当前亟需解决的问题。
发明内容
本申请提供了一种发送和接收随机接入前导码的方法和装置，能够解决终端设备在LTE与NR共存时如何进行非竞争随机接入的问题。
第一方面，提供了一种接收随机接入前导码的方法，包括：网络设备发送第一信息，该第一信息用于指示第一资源或第二资源，该第一信息还用于指示第一随机接入前导码，该第一资源和该第二资源用于传输第一随机接入前导码；网络设备在该第一信息指示的资源上接收第一随机接入前导码。
第一资源例如是NR上行资源，第二资源例如是SUL资源，任意可以用于指示NR上行资源或SUL资源的信息以及任意可以用于指示第一随机接入前导码的信息均可以称为第一信息，第一信息可以是一个信息，也可以是多个信息，根据本申请提供的接收随机接入前导码的方法，网络设备为终端设备配置用于非竞争随机接入的资源，即，NR上行资源的随机接入信道(random access channel，RACH)和SUL资源的RACH，并向该终端 设备指示可以使用的非竞争随机接入资源，从而可以避免终端设备无法确定使用哪个资源发送随机接入前导码导致非竞争随机接入失败，或者，可以避免终端设备在多个资源上重复发送随机接入前导码导致的资源浪费，或者，可以避免终端设备在任意一个资源上发送随机接入前导码导致的网络设备检测随机接入前导码的复杂度增加。
可选地，上述第一信息包括第一指示信息和第二指示信息，第一指示信息用于指示NR上行资源或SUL资源，第二指示信息用于指示第一随机接入前导码。
第一指示信息和第二指示信息可以分别承载于专用的字段中，从而可以灵活指示终端设备进行非竞争随机接入。
可选地，网络设备在第一指示信息指示的资源上接收第一随机接入前导码之前，该方法还包括：网络设备向终端设备发送第三指示信息，第三指示信息用于指示第一指示信息承载于载波指示域(carrier indicator field，CIF)。
在某些情况下，例如在网络设备没有配置跨载波调度时，第一指示信息可以复用现有的字段，此外，第三指示信息指示的内容在被新的指示信息更新之前长期有效，从而可以减小非竞争随机接入过程中的信令开销。
可选地，第一信息包括第二指示信息，第二指示信息用于指示第一随机接入前导码，该第一随机接入前导码与NR上行资源或SUL资源存在对应关系。
根据本实施例提供的方法，仅需一个第二指示信息即可同时指示第一随机接入前导码以及第一随机接入前导码对应的资源，从而减小了信令开销。
可选地，网络设备在第一信息指示的资源上接收第一随机接入前导码之前，该方法还包括：网络设备向终端设备发送第二信息，第二信息用于配置第一随机接入前导码与NR上行资源或SUL资源的对应关系。
网络设备可以配置各个随机接入前导码与NR上行资源或SUL资源的对应关系，例如，网络设备可以通过第二信息配置第一随机接入前导码对应NR上行资源，从而可以灵活配置随机接入前导码与资源的对应关系。
可选地，第一随机接入前导码与NR上行资源或SUL资源的对应关系为通信协议预定义的关系。
网络设备无需通过信令配置对应关系，从而可以减少信令开销，
可选地，网络设备发送第一信息之前，该方法还包括：网络设备发送广播消息，该广播消息用于配置NR上行资源和SUL资源。
网络设备可以通过广播消息预先配置NR上行资源和SUL资源，从而仅需较少的比特即可指示终端设备非竞争随机接入使用的资源，减少了信令开销。
可选地，广播消息包括第一配置信息和第二配置信息，第一配置信息用于配置NR上行资源，第二配置信息用于配置SUL资源。
第一配置信息和第二配置信息承载于同一个消息中，从而可以减少信令开销。
可选地，所述广播消息包括第一字段，所述第一字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息承载的配置信息的数量，所述配置信息用于配置所述NR上行资源和所述SUL资源。
例如，第一字段包括两种指示状态，一种指示状态用于指示广播消息中承载了一个配置信息，该配置信息例如用于配置NR上行资源，另一种指示状态用于指示广播消息中承 载了两个配置信息，该配置信息例如用于配置NR上行资源和SUL资源，网络设备通过第一字段的至少两种指示状态告知终端设备广播消息承载的配置信息的数量，从而可以避免终端设备解码错误导致在错误的非竞争随机接入资源上发送前导码，提高了非竞争随机接入的可靠性。
可选地，所述广播消息包括第二字段，所述第二字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息是否承载了用于配置非竞争随机接入资源的全部配置信息，所述非竞争随机接入资源包括所述NR上行资源和所述SUL资源。
例如，第二字段包括两种指示状态，一种指示状态用于指示广播消息中承载了全部的配置信息，则终端设备无需再监听其它的广播消息，从而减小了终端设备的功耗；另一种指示状态用于指示广播消息中承载了部分配置信息，则终端设备可以在相应的传输资源上监听承载其它配置信息的消息，从而减小了终端设备漏检承载其它配置信息的广播消息的概率。
可选地，广播消息包括第一广播消息和第二广播消息，网络设备发送广播消息，包括：网络设备发送第一广播消息，第一广播消息包括第一配置信息和第四指示信息，第一配置信息用于配置NR上行资源，第四指示信息用于指示第二广播消息；网络设备发送第二广播消息，第二广播消息包括第二配置信息，第二配置信息用于配置SUL资源。
第一配置信息和第二配置信息分别对应两个消息，网络设备可以更灵活地配置NR上行资源和SUL资源。
可选地，网络设备发送第一信息，包括：网络设备发送包括功率门限值的广播消息，该功率门限值用于指示该广播消息的接收功率与NR上行资源和SUL资源的对应关系，该广播消息用于配置NR上行资源和SUL资源，该第一信息包括该功率门限值和第二指示信息，该第二指示信息用于指示第一随机接入前导码。
例如，当广播消息的接收功率大于或等于功率门限值时，终端设备通过NR上行资源进行非竞争随机接入；或者，当广播消息的接收功率小于或等于功率门限值时，终端设备通过SUL资源进行非竞争随机接入。网络设备可以在NR上行资源和SUL资源上同时检测第一随机接入前导码。根据本实施例提供的方法，网络设备可以指示终端设备选择更适合当前通信环境的资源。
可选地，第一指示信息承载于下行控制信息(downlink control information，DCI)、无线资源控制(radio resource control，RRC)信令或者媒体接入控制(media access control，MAC)控制元素(control element，CE)中。
可选地，第一指示信息承载于上行成员载波(uplink component carrier，UL CC)域中。
例如，在DCI中设置一个大小为1比特的字段(即，UL CC域)，该字段用于承载第一指示信息，当第一指示信息为1时，指示终端设备在NR上行资源上发送随机接入前导码，当第一指示信息为0时，指示终端设备在SUL资源上发送随机接入前导码，从而可以灵活指示非竞争随机接入资源。上述DCI承载第一指示信息的方式仅是举例说明，该UL CC字段还可以包括多个比特，用于指示多种指示状态。
第二方面，提供了一种接收随机接入前导码的方法，包括：终端设备接收第一信息，该第一信息用于指示第一资源或第二资源，该第一信息还用于指示第一随机接入前导码，该第一资源和该第二资源用于传输第一随机接入前导码；终端设备在该第一信息指示的资 源上发送第一随机接入前导码。
第一资源例如是NR上行资源，第二资源例如是SUL资源，任意可以用于指示NR上行资源或SUL资源的信息以及任意可以用于指示第一随机接入前导码的信息均可以成为第一信息，第一信息可以是一个信息，也可以是多个信息，根据本申请提供的接收随机接入前导码的方法，网络设备为终端设备配置用于非竞争随机接入的资源，即，NR上行资源的RACH和SUL资源的RACH，并向该终端设备指示可以使用的非竞争随机接入资源，从而可以避免终端设备无法确定使用哪个资源发送随机接入前导码导致非竞争随机接入失败，或者，可以避免终端设备在多个资源上重复发送随机接入前导码导致的资源浪费，或者，可以避免终端设备在任意一个资源上发送随机接入前导码导致的网络设备检测随机接入前导码的复杂度增加。
可选地，上述第一信息包括第一指示信息和第二指示信息，第一指示信息用于指示NR上行资源或SUL资源，第二指示信息用于指示第一随机接入前导码。
第一指示信息和第二指示信息可以分别承载于专用的字段中，从而可以灵活指示终端设备进行非竞争随机接入。
可选地，网络设备在第一指示信息指示的资源上接收第一随机接入前导码之前，该方法还包括：网络设备向终端设备发送第三指示信息，第三指示信息用于指示第一指示信息承载于载波指示域(carrier indicator field，CIF)。上述CIF承载第三指示信息的方式不作限定，该CIF可以包括多个比特，用于指示多种指示状态。
在某些情况下，例如在网络设备没有配置跨载波调度时，第一指示信息可以复用现有的字段，此外，第三指示信息指示的内容在被新的指示信息更新之前长期有效，从而可以减小非竞争随机接入过程中的信令开销。
可选地，第一信息包括第二指示信息，第二指示信息用于指示第一随机接入前导码，该第一随机接入前导码与NR上行资源或SUL资源存在对应关系。
根据本实施例提供的方法，仅需一个第二指示信息即可同时指示第一随机接入前导码以及第一随机接入前导码对应的资源，从而减小了信令开销。
可选地，终端设备在第一信息指示的资源上发送第一随机接入前导码之前，该方法还包括：终端设备从网络设备接收第二信息，第二信息用于配置第一随机接入前导码与NR上行资源或SUL资源的对应关系。
网络设备可以配置各个随机接入前导码与NR上行资源或SUL资源的对应关系，例如，网络设备可以通过第二信息配置第一随机接入前导码对应NR上行资源，从而可以灵活配置随机接入前导码与资源的对应关系。
可选地，第一随机接入前导码与NR上行资源或SUL资源的对应关系为通信协议预定义的关系。
网络设备无需通过信令配置对应关系，从而可以减少信令开销，
可选地，网络设备发送第一信息之前，该方法还包括：终端设备接收广播消息，该广播消息用于配置NR上行资源和SUL资源。
网络设备可以通过广播消息预先配置NR上行资源和SUL资源，从而仅需较少的比特即可指示终端设备非竞争随机接入使用的资源，减少了信令开销。
可选地，广播消息包括第一配置信息和第二配置信息，第一配置信息用于配置NR上 行资源，第二配置信息用于配置SUL资源。
第一配置信息和第二配置信息承载于同一个消息中，从而可以减少信令开销。
可选地，广播消息包括第一广播消息和第二广播消息，终端设备接收广播消息，包括：终端设备接收第一广播消息，第一广播消息包括第一配置信息和第四指示信息，第一配置信息用于配置NR上行资源，第四指示信息用于指示第二广播消息；终端设备接收第二广播消息，第二广播消息包括第二配置信息，第二配置信息用于配置SUL资源。
第一配置信息和第二配置信息分别对应两个消息，网络设备可以更灵活地配置NR上行资源和SUL资源。
可选地，终端设备接收第一信息，包括：终端设备接收包括功率门限值的广播消息，该功率门限值用于指示该广播消息的接收功率与NR上行资源和SUL资源的对应关系，该广播消息用于配置NR上行资源和SUL资源，该第一信息包括该功率门限值和第二指示信息，该第二指示信息用于指示第一随机接入前导码。
例如，当广播消息的接收功率大于或等于功率门限值时，终端设备通过NR上行资源进行非竞争随机接入；或者，当广播消息的接收功率小于或等于功率门限值时，终端设备通过SUL资源进行非竞争随机接入。网络设备可以在NR上行资源和SUL资源上同时检测第一随机接入前导码。根据本实施例提供的方法，终端设备可以选择更适合当前通信环境的资源。
可选地，第一指示信息承载于DCI、RRC信令或者MAC CE中。
可选地，第一指示信息承载于UL CC域中。
例如，在DCI中设置一个大小为1比特的字段(即，UL CC域)，该字段用于承载第一指示信息，当第一指示信息为1时，指示终端设备在NR上行资源上发送随机接入前导码，当第一指示信息为0时，指示终端设备在SUL资源上发送随机接入前导码，从而可以灵活指示非竞争随机接入资源。上述DCI承载第一指示信息的方式仅是举例说明，该UL CC字段还可以包括多个比特，用于指示多种指示状态。
第三方面，提供了一种接收随机接入前导码的装置，该装置可以实现上述第一方面所涉及的方法中网络设备所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的单元或模块。
在一种可能的设计中，该装置的结构中包括处理器和收发器，该处理器被配置为支持该装置执行上述第一方面所涉及的方法中相应的功能。该收发器用于支持该装置与其它网元之间的通信。该装置还可以包括存储器，该存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。
第四方面，提供了一种发送随机接入前导码的装置，该装置可以实现上述第二方面所涉及的方法中终端设备所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的单元或模块。
在一种可能的设计中，该装置的结构中包括处理器和收发器，该处理器被配置为支持该装置执行上述第一方面所涉及的方法中相应的功能。该收发器用于支持该装置与其它网元之间的通信。该装置还可以包括存储器，该存储器用于与处理器耦合，其保存该装置必要的程序指令和数据。
第五方面，本申请还提供了一种网络系统，所述网络系统包括第三方面所述的接收随 机接入前导码的装置和第四方面所述的发送随机接入前导码的装置。
第六方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储了计算机程序代码，该计算机程序代码被处理单元或处理器执行时，使得网络设备执行第一方面所述的方法。
第七方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储了计算机程序代码，该计算机程序代码被处理单元或处理器执行时，使得终端执行第二方面所述的方法。
第八方面，提供了一种通信芯片，其中存储有指令，当其在网络设备上运行时，使得该通信芯片执行上述第一方面的方法。
第九方面，提供了一种通信芯片，其中存储有指令，当其在终端设备上运行时，使得该通信芯片执行上述第二方面的方法。
第十方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码被网络设备的通信单元或收发器、以及处理单元或处理器运行时，使得网络设备执行上述第一方面的方法。
第十一方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码被终端设备的通信单元或收发器、以及处理单元或处理器运行时，使得终端设备执行上述第二方面的方法。
附图说明
图1是一种适用本申请的通信系统；
图2是本申请提供的一种非竞争随机接入的方法的示意性流程图；
图3是本申请提供的一种可能的网络设备的示意图；
图4是本申请提供的另一种可能的网络设备的示意图；
图5是本申请提供的一种可能的终端设备的示意图；
图6是本申请提供的另一种可能的终端设备的示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
图1示出了一种适用本申请的通信系统100。该通信系统100包括网络设备110和终端设备120，网络设备110与终端设备120通过无线网络进行通信，当终端设备120发送信息时，终端设备120的无线通信模块可获取要通过信道发送至网络设备110的信息比特，这些信息比特例如是终端设备120的处理模块生成的、从其它设备接收的或者在终端设备120的存储模块中保存的信息比特。
在本申请中，终端设备可称为接入终端、用户设备(user equipment，UE)、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。接入终端可以是蜂窝电话、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及5G通信系统中的用户设备。
网络设备可以是码分多址(code division multiple access，CDMA)系统中的基站(base  transceiver station，BTS)，也可以是宽带码分多址(wideband code division multiple access，WCDMA)系统中的基站(node B，NB)，还可以是长期演进(long term evolution，LTE)系统中的演进型基站(evolutional node B，eNB)，还可以是5G通信系统中的基站(gNB)，上述基站仅是举例说明，网络设备还可以为中继站、接入点、车载设备、可穿戴设备以及其它类型的设备。
上述适用本申请的通信系统仅是举例说明，适用本申请的通信系统不限于此，例如，通信系统中包括的网络设备和终端设备的数量还可以是其它的数量。
为了便于理解本申请，在介绍本申请提供的发送和接收反馈信息的方法前，首先对本申请涉及的概念做简要介绍。
SUL资源是指仅有上行资源用于当前通信制式的传输资源，例如，对于一个载波，仅有上行频域资源用于传输。例如，在5G移动通信系统中，载波A仅用于NR的上行传输，该载波不用于下行传输，或者该载波用于LTE通信系统的下行传输而不用于NR通信系统的下行传输，则该载波A为SUL资源。
终端设备在初始接入小区时需要进行随机接入，以获取该终端设备在该小区内的唯一标识，终端设备在初始接入小区时的随机接入也称为基于竞争的随机接入。
终端设备接入小区之后，在某些情况下，也需要进行随机接入。例如，终端设备处于RRC连接态下，当终端设备需要对接收到的下行数据回复肯定应答或否定应答时，上下行通信链路处于不同步状态；又例如，终端设备处于RRC连接态下，网络设备需要获取终端设备的定时提前；再例如，终端设备进行小区切换后需要与新的小区建立上下行同步。
上述三种情况下终端设备均需要进行随机接入，与初始接入小区时的随机接入不同的是，上述三种情况的随机接入为非竞争随机接入，即，终端设备根据网络设备分配的唯一的随机接入前导码进行随机接入，不会与其它终端设备使用相同的随机接入前导码。在本申请中，为了简洁，有时会将“随机接入前导码”简称为“前导码”。
图2是本申请提供的一种非竞争随机接入的方法的示意性流程图。如图2所示，该方法包括：
S201，网络设备发送广播消息，广播消息用于配置NR上行资源和SUL资源，该NR上行资源和该SUL资源用于发送随机接入前导码。
例如，该广播消息包括用于配置上述两种资源中的物理随机接入信道(physical random access channel，PRACH)的时域参数、频域参数和码域参数，其中，该时域参数可以是PRACH对应的系统帧、子帧、时隙、符号和周期，该频域参数可以是PRACH的起始资源块(resource block，RB)、PRACH占用的RB的数量，该码域参数可以是前导码格式信息(前导码的序列长度、子载波间隔大小和占用的时间长度)、正交覆盖码(orthogonal cover code)以及循环移位(cyclic shift)。此外，该广播消息可以是系统消息块(system information block，SIB)2，也可以是剩余最小系统消息(remaining minimum system information，RMSI)，本申请对此不作限定。
又例如，网络设备可以通过第一广播消息和第二广播消息配置NR上行资源和SUL资源。其中，第一广播消息包括NR上行资源的PRACH的参数，第一广播消息还包括用于指示是否有其它无线资源配置的指示信息(即，第四指示信息)，当该指示信息指示还有其它无线资源配置时，第二广播消息用于配置SUL资源的PRACH的参数。第一广播消 息例如是SIB2或RMSI，第二广播消息例如是SIB3。
在S201中，当网络设备发送的广播消息中包括功率门限信息时，终端设备根据下行载波的参考信号接收功率(reference signal receiving power，RSRP)与上述功率门限信息指示的门限值的关系确定使用哪个资源发送前导码。若下行载波的RSPR大于或等于门限值，则终端设备确定使用第一套资源参数，若下行载波的RSPR小于门限值，则终端设备使用第二套资源参数，其中，第一套资源参数和第二套资源参数对应NR上行资源和SUL资源，网络设备可以在广播消息中指示两种资源的配置顺序。
在S201中，当网络设备发送的广播消息中不包括功率门限信息时，终端设备可以根据网络设备发送的第一指示信息确定发送前导码的资源，或者，终端设备也可以在NR上行资源和SUL资源上发送两次前导码，网络设备在NR上行资源或SUL资源上向终端设备发送RAR，这样，网络设备无需向终端设备发送第一指示信息，节省了信令开销。
需要说明的是，网络设备发送的广播消息中可以包括多套资源配置参数，其中，仅有一套资源配置参数包括下行载波的配置参数，以便于终端设备通过该下行载波接收触发信息。该多套资源配置参数还可以包括上行带宽参数和频点参数，上行带宽参数可以通过枚举类型来指示，一个枚举值代表一个具体的带宽大小，上行频点参数例如可以是用于指示频点的比特信息，绝对频点使用的比特编码和带宽的定义及栅格大小相关。
此外，广播消息中还可以包括子载波偏移(subcarrierShift)信元，子载波偏移信元用于配置SUL资源的频域资源的偏移模式，偏移模式包括下述模式1，偏移模式还包括下述模式2、模式3和模式4中的至少一种，其中，模式1表示不偏移，模式2表示子载波基带偏移7.5kHz，模式3表示子载波射频偏移7.5kHz，模式4表示栅格偏移7.5kHz，子载波偏移信元指示上述四种模式中的至少一种模式。例如，当SUL资源的子载波间隔配置为15kHz时，基带偏移7.5kHz指的是基于1/2个子载波的偏移量生成基带信号，即e j2π(k+1/2)t，上行资源射频偏移7.5kHz是指在基带信号调制到中射频时乘以载波频率和7.5kHz，即
Figure PCTCN2018095741-appb-000001
栅格频移7.5kHz是指13000号频点对应的频率是1920MHz+7.5kHz。
S202，网络设备向终端设备发送触发信息，该触发信息例如可以是DCI或RRC信令。
当该触发信息是DCI时，网络设备可以通过某种格式的DCI(例如，DCI format 1A)来触发终端设备发起随机接入，这种格式的DCI中包括以下信息：随机接入使用的前导码索引、发送前导码使用的资源类型以及无线帧上可用于发送专用前导码的RACH资源索引信息。其中，该前导码索引所指示的前导码是网络设备为该终端设备分配的专用前导码，其它终端设备不会使用该前导码进行随机接入。发送前导码使用的资源类型用于指示终端设备使用NR上行资源或SUL资源，例如，网络设备可以通过UL CC索引指示终端设备使用NR资源或SUL资源。PRACH Mask Index用于指示分配给该终端设备的用于传输上述专用前导码的RACH资源索引，以PRACH Mask Index等于3为例，查询第三代合作伙伴计划(3rd generation partnership project，3GPP)技术规范(technical specification，TS)36.321的表7.3.1可知，该索引对应的RACH资源索引为2，即，前导码应该在系统帧内的第三个PRACH上发送。
可选地，网络设备可以在DCI中新增大小为1比特的字段(即，UL CC域)用于承载指示前导码使用的上行资源的第一指示信息，例如，当该字段为“1”时，指示终端设备使用NR资源发送前导码，当该字段为“0”时，指示终端设备使用SUL资源发送前导码。
可选地，当网络设备没有配置跨载波调度时，网络设备可以使用CIF字段来指示前导码使用的上行资源，例如，网络设备可以通过RRC信令或高层信令中的某个字段(即，第三指示信息)指示DCI的CIF字段用于承载第三指示信息，指示前导码使用的上行资源。第三指示信息指示的内容在被新的指示信息更新之前长期有效，从而可以减小非竞争随机接入过程中的信令开销。上述CIF承载第三指示信息的方式不作限定，该CIF可以包括多个比特，用于指示多种指示状态。
可选地，通信协议可以预定义随机接入前导码与各个资源的对应关系，例如，可以通过广播消息配置NR上行资源上的非竞争随机接入前导码，其个数为N，索引分别为0至N-1；配置SUL资源上的非竞争随机接入前导码，其个数为M，索引分别为N至N+M-1。通信协议预定义索引为0至N-1的前导码对应NR上行资源，索引为N至N+M-1的前导码索引对应SUL资源。若第二指示信息指示的第一前导码索引为0到N-1中的某一个，则终端设备可以确定在NR上行资源上发送第一随机接入前导码；同理，若第二指示信息指示的前导码索引为N到N+M-1中的某一个，则终端设备确定在SUL资源上发送第一随机接入前导码，即，用于指示随机接入前导码的信息和用于指示非竞争随机接入资源的信息复用相同的字段，从而减小了非竞争随机接入过程中的信令开销。
又例如，网络设备为NR上行资源显示或隐式配置了10个非竞争随机接入前导码，网络设备为SUL资源显式或隐式配置了20个非竞争随机接入前导码，剩余的30～63号前导码用于基于竞争的随机接入；根据网络配置的对应关系，例如广播信息中的1bit域中’0’表示：NR上行资源的非竞争前导码编号在前，SUL的非竞争前导码编号在后，一种可选的编号方式：编号0到9的非竞争随机接入前导码指示为对应NR上行资源上的10个非竞争随机接入前导码；编号10到29的非竞争随机接入前导码指示为对应SUL资源上的20个非竞争随机接入前导码。当网络设备发送的前导码索引为2时，终端设备在NR上行资源上向网络设备发送编号为2的前导码，当网络设备发送的前导码索引为11时，终端设备在SUL资源上发送编号为11的前导码，网络设备在相应的资源上接收终端设备发送的前导码。具体联合编号的方式不局限于以上举例。
当该触发信息是RRC信令时，网络设备可以通过RRC信令中的ra-PreambleIndex字段指示终端设备使用的前导码，以及通过该RRC信令中ra-PRACH-MaskIndex字段指示发送该前导码的PRACH资源。具体实现过程与上述通过DCI触发终端设备发送前导码的方法类似，为了简洁，不再赘述。
上述实施例仅是举例说明，本申请不限于此，例如，触发信息还可以是MAC CE。
方法200还包括：
S203，终端设备根据触发信息所指示的前导码以及PRACH资源发起随机接入，向网络设备发送前导码。
S204，网络设备在PRACH中盲检前导码，若网络设备检测到了前导码，则网络设备后续会在随机接入响应窗口内在物理下行共享信道(physical downlink shared control channel，PDSCH)中发送随机接入响应(random access response，RAR)。
RAR中包括：随机接入无线网络临时标识(random access radio network temporary identity，RA-RNTI)，S203中的前导码对应的索引、TA。RAR中还可以包括其它信息。
图2所示的方法仅是举例说明，本申请提供的非竞争接入的方法不限于此。根据图2 提供的接收随机接入前导码的方法，网络设备提前为终端设备配置用于非竞争随机接入的资源，并在终端设备需要进行非竞争随机接入时向该终端设备指示可以使用的资源，从而可以避免终端设备无法确定使用哪个资源发送随机接入前导码导致非竞争随机接入失败，或者，可以避免终端设备在任意一个资源上发送随机接入前导码导致的网络设备检测随机接入前导码的复杂度增加。
上文详细介绍了本申请提供的发送随机接入前导码和接收随机接入前导码的方法示例。可以理解的是，终端设备和网络设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请可以根据上述方法示例对网络设备等进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请中对单元的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用集成的单元的情况下，图3示出了上述实施例中所涉及的网络设备的一种可能的结构示意图。网络设备300包括：处理单元302和通信单元303。处理单元302用于对网络设备300的动作进行控制管理，例如，处理单元302用于支持网络设备300执行图2的S201和/或用于本文所描述的技术的其它过程。通信单元303用于支持网络设备300与其它网络实体的通信，例如与终端设备之间的通信。网络设备300还可以包括存储单元301，用于存储网络设备300的程序代码和数据。
例如，处理单元302控制通信单元303执行下述步骤：
发送广播消息，该广播消息用于配置NR上行资源和SUL资源，该NR上行资源和该SUL资源用于发送随机接入前导码；
向终端设备发送第一指示信息和第二指示信息，第一指示信息用于指示NR上行资源或SUL资源，第二指示信息用于指示第一随机接入前导码；
在所述第一指示信息指示的资源上接收第一随机接入前导码。
处理单元302可以是处理器或控制器，例如可以是中央处理器(central processing unit，CPU)，通用处理器，数字信号处理器(digital signal processor，DSP)，专用集成电路(application-specific integrated circuit，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信单元303可以是收发器、收发电路等。存储单元301可以是存储器。
当处理单元302为处理器，通信单元303为收发器，存储单元301为存储器时，本申请所涉及的网络设备可以为图4所示的网络设备。
参阅图4所示，该网络设备400包括：处理器402、收发器403、存储器401。其中， 收发器403、处理器402以及存储器401可以通过内部连接通路相互通信，传递控制和/或数据信号。
本领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不加赘述。
本申请提供的网络设备300和网络设备400，提前为终端设备配置用于非竞争随机接入的资源，并在终端设备需要进行非竞争随机接入时向该终端设备指示可以使用的资源，从而可以避免终端设备无法确定使用哪个资源发送随机接入前导码导致非竞争随机接入失败，或者，可以避免终端设备在多个资源上重复发送随机接入前导码导致的资源浪费，或者，可以避免终端设备在任意一个资源上发送随机接入前导码导致的网络设备检测随机接入前导码的复杂度增加。
在采用集成的单元的情况下，图5示出了上述实施例中所涉及的终端设备的一种可能的结构示意图。终端设备500包括：处理单元502和通信单元503。处理单元502用于对终端设备500的动作进行控制管理，例如，处理单元502用于支持终端设备500执行图2的S203和/或用于本文所描述的技术的其它过程。通信单元503用于支持终端设备500与其它终端实体的通信，例如与网络设备之间的通信。终端设备500还可以包括存储单元501，用于存储终端设备500的程序代码和数据。
例如，处理单元502控制通信单元503执行下述步骤：
从网络设备接收广播消息，该广播消息用于配置NR上行资源和SUL资源，该NR上行资源和该SUL资源用于发送随机接入前导码；
从网络设备接收第一指示信息和第二指示信息，第一指示信息用于指示NR上行资源或SUL资源，第二指示信息用于指示第一随机接入前导码；
在第一指示信息指示的资源上向网络设备发送第一随机接入前导码。
处理单元502可以是处理器或控制器，例如可以是CPU，通用处理器，DSP，ASIC，FPGA或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信单元503可以是收发器、收发电路等。存储单元501可以是存储器。
当处理单元502为处理器，通信单元503为收发器，存储单元501为存储器时，本申请所涉及的终端设备可以为图6所示的终端设备。
参阅图6所示，该终端设备600包括：处理器602、收发器603、存储器601。其中，收发器603、处理器602以及存储器601可以通过内部连接通路相互通信，传递控制和/或数据信号。
本领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不加赘述。
本申请提供的终端设备500和终端设备600，根据网络设备发送的广播消息确定用于非竞争随机接入的资源，并根据网络设备发送的第一指示信息确定可以使用的资源，从而可以避免终端设备无法确定使用哪个资源发送随机接入前导码导致非竞争随机接入失败，或者，可以避免终端设备在多个资源上重复发送随机接入前导码导致的资源浪费，或者，可以避免终端设备在任意一个资源上发送随机接入前导码导致的网络设备检测随机接入 前导码的复杂度增加。
应理解，上述收发器可以包括发射机和接收机。收发器还可以进一步包括天线，天线的数量可以为一个或多个。存储器可以是一个单独的器件，也可以集成在处理器中。上述的各个器件或部分器件可以集成到芯片中实现，如集成到基带芯片中实现。
装置和方法实施例中的网络设备或终端设备完全对应，由相应的模块执行相应的步骤，例如发送模块方法或发射器执行方法实施例中发送的步骤，接收模块或接收器执行方法实施例中接收的步骤，除发送接收外的其它步骤可以由处理模块或处理器执行。具体模块的功能可以参考相应的方法实施例，不再详述。
在本申请各个实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请的实施过程构成任何限定。
另外，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read only memory，ROM)、可擦除可编程只读存储器(erasable programmable ROM，EPROM)、电可擦可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于终端设备中。当然，处理器和存储介质也可以作为分立组件存在于终端设备和网络设备中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，数字通用光盘(digital versatile disc，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (35)

  1. 一种接收随机接入前导码的方法，其特征在于，包括：
    发送广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    向终端设备发送第一指示信息和第二指示信息，所述第一指示信息用于指示所述NR上行资源或所述SUL资源，所述第二指示信息用于指示随机接入前导码；
    在所述第一指示信息指示的资源上接收所述随机接入前导码。
  2. 根据权利要求1所述的方法，其特征在于，所述第一指示信息占用第三字段，
    当所述第三字段的状态为第一状态时，所述第一指示信息用于指示所述NR上行资源；
    当所述第三字段的状态为第二状态时，所述第一指示信息用于指示所述SUL资源。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第一指示信息和所述第二指示信息包括于下行控制信息DCI中。
  4. 根据权利要求1至3中任一项所述的方法，其特征在于，在所述第一指示信息指示的资源上接收所述随机接入前导码之前，所述方法还包括：
    向所述终端设备发送第三指示信息，所述第三指示信息用于指示所述第一指示信息承载于载波指示域CIF。
  5. 根据权利要求1至4中任一项所述的方法，其特征在于，所述广播消息包括第一字段，所述第一字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息承载的配置信息的数量，所述配置信息用于配置所述NR上行资源和所述SUL资源。
  6. 根据权利要求1至5中任一项所述的方法，其特征在于，所述广播消息包括第二字段，所述第二字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息是否承载了用于配置非竞争随机接入资源的全部配置信息，所述非竞争随机接入资源包括所述NR上行资源和所述SUL资源。
  7. 一种发送随机接入前导码的方法，其特征在于，包括：
    从网络设备接收广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    从所述网络设备接收第一指示信息和第二指示信息，所述第一指示信息用于指示所述NR上行资源或所述SUL资源，所述第二指示信息用于指示随机接入前导码；
    在所述第一指示信息指示的资源上向所述网络设备发送所述随机接入前导码。
  8. 根据权利要求7所述的方法，其特征在于，所述第一指示信息占用第三字段，
    当所述第三字段的状态为第一状态时，所述第一指示信息用于指示所述NR上行资源；
    当所述第三字段的状态为第二状态时，所述第一指示信息用于指示所述SUL资源。
  9. 根据权利要求7或8所述的方法，其特征在于，所述第一指示信息和所述第二指示信息包括于下行控制信息DCI中。
  10. 根据权利要求7至9中任一项所述的方法，其特征在于，在所述第一指示信息指示的资源上向所述网络设备发送所述随机接入前导码之前，所述方法还包括：
    从所述网络设备接收第三指示信息，所述第三指示信息用于指示所述第一指示信息承载于载波指示域CIF。
  11. 根据权利要求7至10中任一项所述的方法，其特征在于，所述广播消息包括第一字段，所述第一字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息承载的配置信息的数量，所述配置信息用于配置所述NR上行资源和所述SUL资源。
  12. 根据权利要求7至11中任一项所述的方法，其特征在于，所述广播消息包括第二字段，所述第二字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息是否承载了用于配置非竞争随机接入资源的全部配置信息，所述非竞争随机接入资源包括所述NR上行资源和所述SUL资源。
  13. 一种装置，其特征在于，包括处理单元和通信单元，所述处理单元用于控制所述通信单元执行：
    发送广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    向终端设备发送第一指示信息和第二指示信息，所述第一指示信息用于指示所述NR上行资源或所述SUL资源，所述第二指示信息用于指示随机接入前导码；
    在所述第一指示信息指示的资源上接收所述随机接入前导码。
  14. 根据权利要求13所述的装置，其特征在于，所述第一指示信息占用第三字段，
    当所述第三字段的状态为第一状态时，所述第一指示信息用于指示所述NR上行资源；
    当所述第三字段的状态为第二状态时，所述第一指示信息用于指示所述SUL资源。
  15. 根据权利要求13或14所述的装置，其特征在于，所述第一指示信息和所述第二指示信息包括于下行控制信息DCI中。
  16. 根据权利要求13至15中任一项所述的装置，其特征在于，所述通信单元还用于：
    向所述终端设备发送第三指示信息，所述第三指示信息用于指示所述第一指示信息承载于载波指示域CIF。
  17. 根据权利要求13至16中任一项所述的装置，其特征在于，所述广播消息包括第一字段，所述第一字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息承载的配置信息的数量，所述配置信息用于配置所述NR上行资源和所述SUL资源。
  18. 根据权利要求13至17中任一项所述的装置，其特征在于，所述广播消息包括第二字段，所述第二字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息是否承载了用于配置非竞争随机接入资源的全部配置信息，所述非竞争随机接入资源包括所述NR上行资源和所述SUL资源。
  19. 一种装置，其特征在于，包括处理单元和通信单元，所述处理单元用于控制所述通信单元执行：
    从网络设备接收广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    从所述网络设备接收第一指示信息和第二指示信息，所述第一指示信息用于指示所述NR上行资源或所述SUL资源，所述第二指示信息用于指示随机接入前导码；
    在所述第一指示信息指示的资源上向所述网络设备发送所述随机接入前导码。
  20. 根据权利要求19所述的装置，其特征在于，所述第一指示信息占用第三字段，
    当所述第三字段的状态为第一状态时，所述第一指示信息用于指示所述NR上行资源；
    当所述第三字段的状态为第二状态时，所述第一指示信息用于指示所述SUL资源。
  21. 根据权利要求19或20所述的装置，其特征在于，所述第一指示信息和所述第二指示信息包括于下行控制信息DCI中。
  22. 根据权利要求19至21中任一项所述的装置，其特征在于，所述通信单元还用于：
    从所述网络设备接收第三指示信息，所述第三指示信息用于指示所述第一指示信息承载于载波指示域CIF。
  23. 根据权利要求19至22中任一项所述的装置，其特征在于，所述广播消息包括第一字段，所述第一字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息承载的配置信息的数量，所述配置信息用于配置所述NR上行资源和所述SUL资源。
  24. 根据权利要求19至23中任一项所述的装置，其特征在于，所述广播消息包括第二字段，所述第二字段包括至少两种指示状态，所述至少两种指示状态用于指示所述广播消息是否承载了用于配置非竞争随机接入资源的全部配置信息，所述非竞争随机接入资源包括所述NR上行资源和所述SUL资源。
  25. 一种接收随机接入前导码的方法，其特征在于，包括：
    发送广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    向终端设备发送第二指示信息，所述第二指示信息用于指示随机接入前导码，所述随机接入前导码对应于上行资源，所述上行资源为所述NR上行资源或所述SUL资源；
    在所述随机接入前导码对应的上行资源上接收所述随机接入前导码。
  26. 根据权利要求25所述的方法，其特征在于，所述方法还包括：
    预配置所述随机接入前导码对应的所述上行资源；或者，
    向所述终端设备指示所述随机接入前导码和所述上行资源之间的对应关系。
  27. 一种发送随机接入前导码的方法，其特征在于，包括：
    从网络设备接收广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    从所述网络设备接收第二指示信息，所述第二指示信息用于指示随机接入前导码，所述随机接入前导码对应于上行资源，所述上行资源为所述NR上行资源或所述SUL资源；
    在所述随机接入前导码对应的上行资源上发送所述随机接入前导码。
  28. 根据权利要求27所述的方法，其特征在于，所述方法还包括：
    预配置所述随机接入前导码对应的所述上行资源；或者，
    从所述网络设备获取所述随机接入前导码和所述上行资源之间的对应关系。
  29. 一种装置，其特征在于，包括处理单元和通信单元，所述处理单元利用所述通信单元：
    发送广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    向终端设备发送第二指示信息，所述第二指示信息用于指示随机接入前导码，所述随机接入前导码对应于上行资源，所述上行资源为所述NR上行资源或所述上行SUL资源；
    在所述随机接入前导码对应的上行资源上接收所述随机接入前导码。
  30. 根据权利要求29所述的装置，其特征在于，所述处理单元还用于：
    预配置所述随机接入前导码对应的所述上行资源；或者，
    利用所述通信单元向所述终端设备指示所述随机接入前导码和所述上行资源之间的对应关系。
  31. 一种装置，其特征在于，包括处理单元和通信单元，所述处理单元利用所述通信单元：
    从网络设备接收广播消息，所述广播消息用于配置新无线NR上行资源和增补上行SUL资源；
    从所述网络设备接收第二指示信息，所述第二指示信息用于指示随机接入前导码，所述随机接入前导码对应于上行资源，所述上行资源为所述NR上行资源或所述上行SUL资源；
    在所述随机接入前导码对应的上行资源上发送所述随机接入前导码。
  32. 根据权利要求31所述的装置，其特征在于，所述处理单元还用于：
    预配置所述随机接入前导码对应的所述上行资源；或者，
    利用所述通信单元从所述网络设备获取所述随机接入前导码和所述上行资源之间的对应关系。
  33. 一种通信装置，用于实现权利要求1至12中任一项所述的方法，或者，用于实现权利要求25至28中任一项所述的方法。
  34. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机程序，当所述计算机程序被计算机运行时，使得所述计算机执行权利要求1至12中任一项所述的方法，或者，使得所述计算机执行权利要求25至28中任一项所述的方法。
  35. 一种通信系统，其特征在于，
    包括如权利要求13至18中任一项所述的装置，以及，包括如权利要求19至24中任一项所述的装置；或者
    包括如权利要求29或30所述的装置，以及，包括如权利要求31或32所述的装置。
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